Does any one here have any experience with (or knowledge of) taking an instantaneous energy (power) measurement from one of these new inverter based wave form controlled power sources while it's welding? I've been told by some one at Miller that a Fluke model 345 meter is required.

And where would this reading be taken from? At present I'm assuming it would be across the two front (main) out put studs on the machine.

One of my current projects is working on qualifying a WPS (for pipe welding) to Section IX using a PipePro 450 RFC machine. At some point in the not to distant future I'm going to need to write a number on a form that will be the basis for a heat input calculation.

Any one?